Threaded screw cannula



FIG. 1 is a perspective view of a threaded screw cannula showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a front end elevational view thereof; and,

FIG. 6 is a back elevational view thereof. 

The ornamental design for a threaded screw cannula, as shown and described. 